Torble swarm
Type Vermin
CR 2
Environment ruins

Source: The Bastards of Erebus, pg(s). 84-85

En masse, the ooze-insect hybrid creatures known as torbles can form swarms of hundreds of individuals. Swarms of a certain size can form a hivemind, although individual torbles are vulnerable to telepathic control. Although lone torbles are scavengers, in swarms they hunt, and there are some indications that swarms are territorial.[1]